Australian reptiles generally don't hibernate, although in Tasmania it may well occur.
In this country brumation is probably more accurate, it's probably quite a fine line but they generally stay active to some degree during the winter months.
Yes a agree very few if any,(with the possible exception of a carpet population on south oz island-s, and the odd pocket of diamonds, oz pythons dont hibernate, they get a lot less active in moast ares but do not hibernate. A lot of wild populations, will even keep feeding thru the cooler months.